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CIPHER-SLIDE :
A ciphering device consisting essentially of two rods, one sliding
along the other, each bearing an equispaced alphabet, which is
usually in alphabetical order on one, and hatted on the other.
For convenience in use one of the alphabets is usually repeated.
It is used in much the same way as the cipher-disc.
CIPHER-WHEEL :
The outer wheel of a Wheatstone or similar cipher machine containing
the cipher alphabet.
CLASH, v :
1. (of wheel-orders in Enigma). To have the same wheel in the same
position on two consecutive days on the same key.
2. (misused for crash).
CLASH, n :
An instance of the above (see Clash, v.), i.e. an infringement of
the non-crashing rule.
CLEAR TEXT :
Plain language; usually, the text of a message before encoding or
enciphering or after decoding or deciphering; a plain-language
message.
CLEAR-WHEEL :
The inner wheel of a Wheatstone or similar cipher machine containing
the clear alphabet.
CLICHE :
A set of two or more plain language words or code-groups that are
known or expected to occur together in the same order in different
cipher messages. See also split cliche.
CLICK :
A repeat or repetition of one or more cipher units usually in two
or more messages, especially a repeat which, by its position in the
messages or from the fact that it is one of a significant series,
suggests that the messages are in depth, See also forward click,
backward click, positional.
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